gcc oled.c ssd1306_i2c.c -lwiringPi -o oled

gcc helloworld.c ssd1306_i2c.c -lwiringPi -o helloworld

####
#oled:oled.o ssd1306_i2c.o
#    gcc -o $@ $^
#oled.o:oled.c ssd1306_i2c.h
#    gcc -c $<
#ssd1306_i2c.o:ssd1306_i2c.c ssd1306_i2c.h
#    gcc -c $<
#clean:
#    rm -rf *.o oled
####
